Numerical study of unsteady mixed convection stagnation point flow over a stretching cylinder with sinusoidal surface temperature
Título del documento: Numerical study of unsteady mixed convection stagnation point flow over a stretching cylinder with sinusoidal surface temperature
Revista: Revista mexicana de física
Base de datos: PERIÓDICA
Número de sistema: 000425392
ISSN: 0035-001X
Autores: 1
1
1
2
Instituciones: 1International Islamic University, Islamabad. Pakistán
2University of Cluj, Faculty of Mathematics and Statistics, Cluj-Napoca. Rumania
Año:
Periodo: Jul-Ago
Volumen: 62
Número: 4
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, teórico
Resumen en inglés The paper provides the analysis of unsteady two-dimensional mixed convection stagnation point flow over a vertical stretching cylinder with sinusoidal wall temperature. The governing partial differential equations are converted into dimensionless form by using suitable transformations. For the numerical solution of dimensionless partial differential equations, an implicit finite difference scheme namely Keller Box method is applied. The comparison is made to show the accuracy of our results with literature for some special cases. Graphs of velocity and temperature profiles are plotted for assisting and opposing flow cases at fixed value of time. The assisting buoyant flow augment the momentum boundary layer while opposing buoyant flow show opposite behavior. The thermal boundary layer thickness grows with the passage of time. Skin friction and Nusselt number are plotted for unsteadiness parameter and amplitude of surface temperature oscillations against time. It is apparent that as the values of surface temperature oscillations drops, the amplitude of oscillations in skin friction and Nusselt number also drops. Furthermore, isotherms are drawn to exhibit the influence of the amplitude of oscillations on curvature parameter with time
Disciplinas: Física y astronomía
Palabras clave: Física,
Cilindro de estiramiento,
Flujo de capa límite,
Convección mixta,
Método de diferencias finitas
Keyword: Temperatura de la pared sinusoidal,
Physcis,
Stretching cylinder,
Boundary layer flow,
Mixed convection,
Finite difference method,
Sinusoidal wall temperature
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